Polishing-machine.



R. CONRADER.

POLISHING MACHINE. APPLICATION FILED APR. 12. |91|.

Patentd Jan. 23, 1917.

3 SHEETS-SHEET I.

RI CONRADER.

POLISHING MACHINE.

APPLICATION FILED APR. 2. 19H.

R. CONRADER.

POLISHING MACHINE.

APPLICATION man APR. 12. 1911.

m1 3,591 Patented Jan.'23,1917.

3 SHEETS-SHEET 3- 'V/l/l/A 1 .5; 64 m w L r I nu;

RUDOLPH CONRADER, 0F ERIE, PENNSYLVANIA.

POLISHING-MACHINE.

Specification of Letters Patent.

Patented Jan. 23, 191%.

Application filed April 12, 1911. Serial No. 620,658.

To all cvhom it may concern:

Be it known that I, RUDOLPH CONRADER,

a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in PolishingMachines, of which the following is a specification.

This invention relates to polishing machines, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The invention is peculiarly adapted for actuating laps for polishing and as shown is arranged to operate laps similar to that shown in my former application, #597,013. It is preferable to arrange such machines for handling a plurality of laps, also to handle a plurality of laps from the same arbor.

The machine as shown is particularly adapted for polishing pump barrels, and holding devices are shown for conveniently operating upon "such barrels.

The invention is illustrated in the accompanying drawings as follows:

Figure 1 is a plan view of the machine.

Fig. 2 a side elevation of the machine. Fig.

3 a sectional view of one of the laps on the line 33 in Fig. 4. Fig. 4 a section on the line 4-4 in Fig. 3. Fig. 5 an enlarged view of one of the pump barrels detached and with the centering collars thereon. Fig. 6 a section of a fragment of the machine on the line 66 in Figs. 1 and 2. .Fig. 7 a. section on the line 77 in Figs. 1 and 2. Fig. 7 is a section on the line 8-8, the point of view being from the right. Fig. 8 is a section of the machine on the line 88 in Figs. 1 and 2, parts of the machine being removed to better show construction. Fig. 9 is acentral horizontal section of the feed mechanism and reversing gears, the section being on the line 99 in Fig. 11. Fig. 10 a side elevation of the reversing lever. Fig. 11 shows a central section of the arbor and one of the spindles with their bearing and a front elevation of the reversing gear.

The frame of the machine is made up of the two longitudinal bars 1 and 2 which are supported by frames forming legs 'or supports 3, 4, 5, and 6.

The working barrels 7 (see Fig. 5) are screw threaded at the ends 8-8 and. in order that their bores may be centered with this same thread, I arrange the centering collars 9 on these screw threaded ends and these centeringcollars or bushings are centered in the machine.

Rest sockets 10 are arranged in the cross frame 11 on the supports 3 and 6. Similar sockets 12 are arranged in the cross pieces 13 supported by the bars 1 and 2. These cross bars 13 are clamped on the bars 1 and 2 by plates 14. The studs 15 extend upwardly between both the sockets 10 and 12 and plates 16 are arranged on these studs so as to engage the collars 9 in the sockets. Nuts 15 are arranged on the studs and by means of these nuts operating on the plates 16, the barrels may be clamped in the sockets and thus be in a position to be operated upon by the laps. The plates 16 are preferably narrow enough so as to be swung sidewise and dropped down into the spaces between the sockets so as to be out of the way in removing and reinserting barrels for operation,

In Figs. 3 and 4, I show in detail one of the laps preferably used in this machine, the same forming the subject matter of my former application heretofore referred to. The laps are formed of the two parts 18-18 which are carried by the plates 2020 and 21-21. The plates 20 are secured to the head 19. At the opposite end the plates 21 are secured to a screw threaded head 22 and stop bolts 23 are provided for limiting the outward movement of the laps. The screw threaded heads 22 of the laps are screwed onto the ends 24 of the spindles 25. The opposite end. of the spindles 25 are squared at 26 and are driven by the arbors 27, the arbors having the squared sockets 28 to receive the squared ends 26 (see Fig. 11). The spindles are carried by the bearing bars 29. These bars are in the form of pipe or tube and have the bearings 30 arranged at their ends. Each spindle 25 has the shoulder 31 at the end adjacent to the lap and a collar .32 is arranged against this shoulder, the washer 33 being interposed between this collar and the bearing 30. At the opposite end the nuts 35 and 36 nuts and the end of the bearing 30. In this way, the end thrust on the spindle is taken feed frame is moved longitudinally of the machine, the bearing bars are forced endwise carrying with them the spindles and laps. The bearing bars slide through bearings '40 arranged on the cross pieces 41 carried by the legs or supports 4 and 5.

It will be noted that as the feed frame is'moved longitudinally of the machine, the bearing bars' slide through the bearings and carry with them the spindles on which are arranged the-laps. It will be observed also that these bearing bars enter the barrels being. polished, and in this way, the laps are given a bearing support whichfollows the laps into the barrel.

The feed frame 37 has the depending posts 42, 43, 44'and (see Fig. 8). Between the posts 42 and 43 are the bearings 46 which rest on the bar 1 and between the posts 44 andL45 are the bearings 47 which rest on the bar 2. Racks 48 are set into the bottoms of the bars 1 and 2 and gears 49 mesh these racks. The gears 49 are fixed on the shaft 50, the shaft being mounted in the bearings 51 on the depending posts of the bearing frame. A handle 52 is arranged atJthe end of the shaft so that the bearing frame may be fed by hand if desired. This is accomplished by turning the shaft and with it the gears 49, the gears 49 acting on the racks to efiect the feeding movement. These gears operating on both sides of the bearing frame insure an even feeding movement at both front and rear of the frame.

I prefer to provide an automatic reverse and feeding mechanism for feeding the bear-- ing frame. This mechanism is.as follows: The beveled gear 53 is fixed on the shaft 50. This meshes the beveled gear 54 which is fixed on the shaft 55. The shaft 55 is mounted in bearings on the posts 56 extending downwardly from the bearing frame between the bars 1 and 2. A clutch block 57 is slidingly mounted on the shaft-55 but locked against rotation thereon. The block has the usual ring 58 on which the lever .59 operates. The block is provided with the detents 60 which operate in conjunction with the detents 62 on the face of a gear 63. The

gear 63 is loosely mounted on the shaft 55 so that when the clutch is thrown out, the shaft 55 may rotate without operating the gear'63 and vice versa, when the clutch is thrown in, the shaft 55 is made to rotate with the gear 63. The. gear 63 meshes the spur gear 64 mounted on a stud 65. The stud 65 is carried between-the posts 56 and 67, the post 67 extendingdownwardly from the feed frame. The gear 64 is fixed on the face of a gear 68 also journaled on the stud 65. The gear 68 meshes a gear 69, the gear 69 being fixed on the shaft 70. The shaft lever 77 operates, the lever being provided with the pins 7 8 for engaging with the ring as shown in Fig. 10.

The operation of the feed mechanism so far as described is as follows: The shaft 7 0 being driven in one direction or the other, communicates its movement through the series of gears described to the gear 63. With the clutch having the block 57 in engagement, the shaft 55 is driven with the gears and by the feed pulleys 71. The motion of the shaft is communicated to the feed shaft 50.by means of thegears 53 and 54. This, therefore, compels a movement of the feed frame along the bars 1 and 2 carrying with it the lap spindles.

The reversing mechanism for the feed is as follows: The lever 77 is pivotally mounted on a post 7 9 extending downwardly from the feed frame. It is provided with the arms 80. The lever 81 is also pivoted-on the post 79, and it is providedwith the arms 82, adjusting screws 83 being arranged at the ends ofthe arm 82. A wheel 84 is pivotally mounted on, the lever 81 and engages detents 85 in the end of a plunger 86. The plunger 86 is carried in a socket 87 and is forced .outwardly against the wheel 84 by means of the spring88.' The socket 87 is carried by a post 87 extending downwardly from the bearing frame. A reversing rod 89 is carried by the swivel block 90 on the bottom of the lever 81, and as the feeding frame traverses the main frame, this reversing rod 89 contacts the reversing stops 91 and effects a reversing of the feed mechanism. The reversing stops'91 are adjustably mounted in the bars 41 by means of the screws 92.

The operation of the reversing mechanism is as follows: -W hen the rod 89 engages tion between the detent'sf The lever 77 is' therefore not moved with the lever 81 untilthe roller has passed this dividing point. The influence of. the spring operating against the plunger, forces the side of the miaeei contacted the end 80 of the lever 77, this movement of the lever 81 through the ac- Arms 93 extending downwardly from the feeding frame form supports for the shaft 94, the shaft 94 being also journaled in the main supports of the machine 4 and 5. Feed drive pulleys 9696 are mounted on the shaft 94 and locked against rotation thereon' by a spline 94 extending the full length of the shaft. In thisway, the feed drive pulleys 96 may travel along the shaft 94 between the arms 93 with the feed frame and still be driven readily by the shaft 94. Belts- 97 and 98 extend from the pulleys 96 to the pulleys 71, one of these belts 97 being straight and the other being reversed or twisted so as to give the one pulley 71 a re: verse direction ofmovement from the other pulley 71.

The arbors are driven from the pulley 95 which is mounted on the shaft 94 between the pulleys 96. This pulley is locked against rotation on the shaft 94 by the spline 94 but is free to slide along the shaft as are the pulleys 96. The shaft 94 is driven by the pulley 99 from any convenient source of power and the movement of the shaft is communicated by way of the pulley 95 and belt 100 to pulleys 101 on the arbors 27, the pulleys 101 being fixed on said arbors by the keys 102 and the belt being arranged over and under the different pulleys 101, as shown in Fig. 8, so as to drive all the spindles. In

*this way, both the feed movement and the drive movement is delivered to the parts on the feed frame as it travels along the machine to give the feeding movement to the laps, and the drive belts are relieved of any strain that might be incident to feeding them along a drum or other means of communication as is commonly employed in machines driven with a shifting movement. What I claim as new is: 1. In a polishing machine, the combination of'a lap made up of sections movable radially under the influence of centrifugal force; a spindle carrying the lap; means for rotating the spindle; and mechanism for automatically reciprocating the spindle, the speed throughout each reciprocating move ment being uniform.

2. In a polishing machine, the combina-- tion of a plurality of spindles; means for rotating said spindles; and a common mechanism for axially and automatically reciprocating the spindles in unison, the speed throughout each reciprocating movement being uniform.

3. In a polishing machine, the combination of two spindles in alinement; an arbor between the spindles for driving them; and mechanism for axially reciprocating the arbor with the spindles.

4. In a polishing machine, the combination of two spindles in alinement; an arbor between the spindles for driving them; and mechanism for automatically reciprocating the spindles with the arbor in an axial direction.

5. In a polishing machine, the combination of two spindles arranged in alinement; laps arranged at the outer ends of said spindles, said laps being made up of sections movable radially under the influence of centrifugal force; an arbor arranged between the spindles for driving said spindles; and

mechanism for reciprocating the spindles .with the arbor in an axial direction.

6. In a polishing machine, the combination of a plurality of arbors; spindles extending from each end of the arbors; and a common mechanism for axially reciprocating the arbors and spindles.

7. In a polishing machine, the combination of a work holder; a bearing bar adapted to enter the bore of a tube in the work holder; a spindle journaled in the bearing bar; means for rotating the spindle in the bearing bar; supports for the bearing bar; and means for reciprocating the bearing bar and work holder relatively to each other.

8. In a polishing machine, the combination of a work holder; a bearing bar adapted to enter the bore of a tube in the Work holder; a spindle journaled in the bearing bar; means for rotating the spindle in the bearing bar; supports for the bearing. bar; and means for reciprocating the bearing bar.

9. In a polishing machine, the combination of a work holder; a bearing bar adapted to enter the tube in the Work holder; a spindle journaled in the bearing bar; means for rotating the spindle in the bearing bar; a movable support for the bearing bar; a stationary support on which the bearing bar is slidingly mounted; and means for reciprocating the movable support to reciprocate the bearing bar and spindle.

10. In a polishing machine, the combination of a work holder adapted to hold a plurality of tubes in parallel relation; a'series of bearing bars adapted to enter'bores of tubes arranged in the work holder; spindles j ournaled in the bearing bars; means for rotating said spindles; supports for the bear- 12. In a polishing machine, the combi-- nation of two work holders each adapted to hold a series of tubes in parallel relation, the tubes in one work holder being in alinement with those in the other; a series of arbors arranged between the work holders; a series of bearing bars one at each end of each arbor in alinement with the work holders; spindles journaled in the bearing 'bars' and connected with thearbors; and means for reciprocating the work holders and arbors relatively to each other.

13. In a polishing machine, the combination of'two work holders each adapted to hold a series of tubes in parallel relation, the tubes in one work holder being in alinement with those in theother; a series of arbors arranged between the work holders; a series of bearing bars one at each end of each arbor in alinement with the work holders; spindles journaled in the bearing bars and connected with the arbors; and

means for reciprocating the arbors and bearing bars.

14. Ina polishing machine, the combination of two work holders each adapted to hold a series of tubes in parallel relation, the tubes in one work holder being in alinement with those in the other; a series of ar- 1 bors arranged between thework holders; a

series of bearing bars one at. each end of each arbor in alinement with the work "holders; spindles journaled in the bearing bars and connected with the arbors; means for reciprocating the work holders and arbors relatively to each other; and a common means for automatically reciprocating the arbors and bearing bars.

15. In a polishing machine, the combination of a spindle adapted to carry a polishing device; 'a bearing bar for the spindle in the form of a tube; bearings at the ends of the bearing bar in which the spindle is journaled; and thrust bearings on the bear-' ing bar for sustaining the thrust of the spindle.

16. In a polishing machine, the combination of a spindle adapted to carry a polishing device; a bearing bar for the spindle in the form of a tube; bearings at the ends of the bearing bar in which the spindle is ournaled; thrust bearings on the bearing bar for sustaining the thrust of the spindle;

a movable support for the bearing bar; a'

feed device for actuating said movable support; and a stationary support on which the bearing bar-1s slidingly mounted.

1.7. In a polishing machine, the combination of two spindles arranged in alinement; an arbor between the spindles for driving the spindles; a bearing bar for each spindle, comprising bearings at its ends in which the spindle is journaled; a thrust bearing for sustaining the thrust of the spindle; supports for said bearing bar and arbor; means for moving said support with the feeding movement to the spindles; and stationary supports on which said bearing bars are slidably mounted.

18. In a polishing machine, the combination of aseries of arbors arranged in-parallel relation; a single belt for directly driving said arbors; means for reciprocating said arbors; a series of spindles driven by said arbors; and work supports in alinement with said spindles.

19. In a polishing machine, the combination of a series of arbors in parallel relation; a feed frame on which said arbors are mounted; a drive shaft; a pulley slidingly mounted on said shaft but locked against rotation thereon; a belt connection betweensaid pulley and said arbors and a feed mechanism carrying said'pulley and arbors in an axial direction. I

20. In a polishing machine, the combination of a series of arbors; a removable feed frame on which the arbors'are mounted; a machine frame comprising parallel bars on which the feed frame is slidingly-mounted; adrive pulley for the arbors arranged below the feed frame;-and a belt connection between the' pulley and the arbors, the strain of said belt operating to hold said feed frame in place on said machine frame.

21. In a polishing machine, the combination of a series of arbors arranged in parallel relation; a feed frame on which said arbors are mounted; a pulley for driving said arbors; a belt connection between said pulley and said arbors; and a feed device for automatically reciprocating said feed frame.

'22. In a polishing machine, the combination of a series of arbors arranged in parallel relation; a feed frame on which said arbors are mounted; a drive shaft arranged on the machine; a drive pulley slidingly mounted on said shaft but locked against rotation thereon; a belt connection betweensaid pulley and arbors; and means for reciprocating said feed frame and for moving said drive pulley axially on said drive shaft withsaid feed frame.

23. In a polishing machine, the combination of an arbor; a spindle driven by the arbor; a feed frame on which the arbor is mister frame and with it the arbor and drive pulley. i

24. In a polishing machine, the combination of an arbor; a feed frame on which the arbor is mounted; a drive shaft; a drive I pulley slidingly mounted on the shaft but locked against rotation thereon; a belt connection between the Pulley and the arbor; feed drive pulleys slidingly mounted on the drive shaft but locked against rotation.

thereon; feed pulleys mounted on the feed frame; a direct connection between one feed drive pulley and one feed pulley and a twist belt connection between the other feed drive pulley and feed pulley; a clutch mechanism for throwing in and out said feed pulleys; a feed mechanism driven by said feed pulleys for reciprocating the feed frame; and means I carried by the feed frame for moving the drive pulley and feeddrive pulleys on the drive shaft with the feed frame.

25 In a polishing machine, the combina'- tion of a series of spindles; anarbor for driving the spindles; a feed frame carrying the arbor; an automatic feed mechanism carried by the feed frame; devices for throwing said automatic feed mechanism mto and out of action; and means manually operative for actuating the feed frame.

26. In a polishing machine, the combination of a machine frame comprising parallel bars; leg supports arranged on said bars; a feed frame slidingly mounted on said bars; an arbor mounted on the feed frame; a work support arranged on said bars and spindles driven by said arbor; and means for reciprocating said frame on said bars.

27. In a polishing machine, the combination of a machine frame comprising parallel bars; leg supports for said bars; work holders arranged on said bars at each end of the frame; a feed frame slidingly mounted on said bars; an arbor on said feed frame; a spindle on each.end of the arbor; and means for reciprocating the feed frame.

28. In a polishing machine, the combination of a machine frame comprising parallel bars and supporting legs; a feed frame slidingly mounted on said bars;a series of'arbors mounted on said feed frame; work holders at each end of said bars adapted to hold a plurality of tubes; spindles arranged at each end of each arbor for operating upon the tubes in the work holder; and means for reciprocating the feed frame. 7

29. In a polishing machine, the combination of a machine frame comprising parallel bars and supporting legs; a feed .frame slidingly mounted on said bars; a series of arbors mounted on said feed frame; work holders at each end of said bars adapted to hold a plurality of tubes; spindles arranged upon the tubes in the work holder; means for reciprocating the feed frame, comprising a drive shaft; pulleys slidingly mounted on said drive shaft but locked against rotation thereon; a belt connection between said pulleys; and mechanism on the feed frame for converting the movement of the pulleys into the feeding movement of the frame.

30. In a polishing machine, the combination of a machine frame comprising parallel bars and supporting legs; a feed'frame slidingly mounted on said bars; a series of arbors mountedmn said feed frame; work holders at each end of said bars'adapted to hold a plurality of tubes; spindles arranged at each end of each arbor for operating upon the tubes in the work holder; means for reciprocating the feed frame, compris ing a drive shaft; pulleys slidingly mounted on said drive shaft but locked against rotation thereon; a belt connection between said pulleys; mechanism on the feed frame for converting the movement of the pulleys into the feeding movement of the frame; and apparatus for driving said arbors comprising a drive pulley slidingly mounted on the drive shaft but locked against rotation thereon.

31. In a polishing machine, the combination of a machine frame comprising parallel bars and supporting legs; a feed frame slidingly mounted on said bars; a series of arbors mounted -on said feed frame; work holders at each end of said bars adapted to hold a plurality of tubes; spindles arranged at each end of each arbor for operating upon the tubes in the work holder; means for reciprocating the feed frame, comprising a drive shaft; pulleys slidingly mounted on said drive shaft but locked against rotation thereon; a belt connection between said pulleys; mechanism on the feed frame for converting the movement of the pulleys'into the feeding movement of the frame; apparatus for driving said arbors comprising a, drive pulley slidingly mounted on the drive shaft but locked against rotation thereon; and devices for moving said pulleys with the feed frame. a

32. In a polishing machine, the combination of a work support comprising a socket; a bushing adapted to engage a tube to be polished arranged in the socket; and means for clamping the bushing in the socket for holding the work in place.

33. In a polishing machine, the combination of a work holder, comprising sockets; screw threaded bushings having their outer peripheries adapted to fit in said sockets and their inner peripheries to engage a screw threaded tube; and clamps for holding said bushings in said sockets.

'at each end of each arbor for operating 34. In a polishing machine, the combination of. an arbor; a spindle driven by the arbor; means for reciprocating the arbor and spindle; a work holder comprising two sockets in alinement; bushings having their outer peripheries adapted to fit in said sockets and to engage a tube at their inner peripheries; and means-for clamping said bushings in said sockets.

35. In a polishing machine, the combination of awork holder comprising a series of sockets arranged in parallel relation; two bars each bar having a series of sockets with each socket in alinement With a companion socket on the other bar; a series of bushings having their outer peripheries adapted to fit in said sockets and their inner peripheries adapted to engage tubes to be polished; and means for clamping said bushings in said sockets.

36. In a polishing machine, the combination of a work holder comprising a series of v witnesses.

.sockets arranged in parallel relation; two

bars each bar having a series of sockets with each socket in alinement with a companion socket on the other bar; a series of bushings having their outer peripheries adapted to fit in said sockets and their inner peripheries adapted to engage tubes to be polished; means for clamping said bushings to said sockets comprising studs extending upwardly from the work'holderbetween the sockets; and clamping plates extending from one bushing to another, said plates be-' ing whipped to permit of their turning on the stud and dropping into the spaces between the bushings.

In testimony whereof I- have hereunto set my hand in the presence of two subscribing Witnesses:

B. M. HARTMAN, VINNIE C. Hnss.

RUDOLPH CONRADER. 

